• Title, Summary, Keyword: Ecosystem & Environment

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Paradigm Shift in Policy of Soil Environment Conservation in Korea (우리나라 토양환경보전 정책의 패러다임 전환)

  • Park, Yong-Ha;Yang, JaeE
    • Journal of Soil and Groundwater Environment
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    • v.23 no.3
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    • pp.10-26
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    • 2018
  • This paper reviews the soil conservation policies (SCP) in the global community and suggests the improved options in SCP in Korea. Soil Environment Conservation Act in Korea states soil is a valuable natural resource and it's value should be enhanced to provide the benefits that soil ecosystem can offer to people. However, SCP in Korea limits its application to not only the scope of soil environment but also the issues on soil pollution. The SCPs in the advanced countries have shifted their scopes from soil environment to soil ecosystem, put emphasis on the conservation of soil health rather than soil quality, and set the goals to optimize the soil ecosystem services to people while minimizing the soil threats. In this context, the soil security initiative was recently proposed to accomplish this goal while employing the nexus concept to bridge the soil ecosystem services with water, atmosphere, climate and biodiversity. Therefore, the key policies in soil conservation in Korea should expand the scope from soil environment to soil ecosystem, focus on soil health management, and develop the holistic governance among diverse stakeholder to maximize the soil ecosystem services. Soil ecosystem should be secured by national soil policies for human health.

Trace Organic Contaminants in Sediments from Deep-sea Basin near Dokdo, Korea

  • Yim, Un-Hyuk;Oh, Jae-Ryoung;Hong, Sang-Hee;Li, Dong-Hao;Shim, Won-Joon;Choi, Hye-Kyung;Kim, Eun-Soo;Shim, Jae-Hyung
    • Ocean and Polar Research
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    • v.24 no.4
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    • pp.391-398
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    • 2002
  • Trace organic contaminants in deep-sea sediments near Dokdo were analyzed. Total PAMs concentration ranged 14.8-314 ng/g dry weight and high molecular weight PAHs were dominant. The highest PAHs concentration was detected at A19 which located at Ulleung Basin. Most of organochlorines were under detection limit. Among the detected organochlorines, DDT compounds were dominant and followed by HCHs and HCB. Butyltin compounds and most of organophosphorus pesticides were not detected. Vertical distribution of PAHs showed typical sub-surface maximum and decreasing trends depending on depth. The highest PAHs concentration reached 454ng/g. Some organochlorines, DDT, HCH was detected and also showed decreasing trends. Other target organic pollutants were not detected in core sediments. Abnormally high level of PAHs concentration in A19 was discussed and the input sources were inferred to be the transport of sludge derived pollutant dumped at dumping site 'Byung' by deep current.

Analysis of Ecosystem Service Value Change Using a Land Cover Map (토지피복 지도를 이용한 생태계 서비스 가치 변화 분석)

  • Park, Meejeong;Jeon, Jeong Bae;Choi, Jin Ah;Kim, Eun Ja;Im, Chang Su
    • The Korean Journal of Community Living Science
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    • v.27 no.spc
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    • pp.681-688
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    • 2016
  • This study examined the effective uses of an ecosystem service value assessment in the fields of rural planning and development through archiving and reviewing/analyzing existing concepts, evaluation methods and prior examples of Ecosystem services. Based on land cover analysis, this study evaluated the usability changes in the ecosystem service value for a period spanning 1975 to 2000. The results from the countrywide data survey (with an exception of Jeju island) showed a 33.15% decrease in ESV by 2000. The total ESV represented 5,385 million USD in 1975, and 3,600 million USD in 2000 of the study area. In addition, the ecosystem service value with a scale of metro cities and provinces was also examined. The ESV of most regions decreased by 2000, but Daejeon and Kyeongnam, and Kyeongbuk provinces increased. The trends of year to year changes in the ESV were very diverse throughout the country. Jeonnam showed the smallest decrease, 747 million USD, which is 59% of the ESV in 1975. Nevertheless, the despite the regional differences in available natural resources, the natural resource assets value is ultimately determined by rural development policies and regional economic attributes. Therefore, an ecosystem service must be considered as an important criterion for rural planning and development policy.

Ecosystem management system of Wangsuk stream region by geographical information systems (GIS를 이용한 왕숙천 유역의 생태계 관리 시스템)

  • 이웅재;원두희
    • Journal of environmental and Sanitary engineering
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    • v.16 no.3
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    • pp.54-60
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    • 2001
  • The need and concern about ecosystem are growing rapidly. However, ecosystem management systems are still in the first stage since the data are handled locally and separately. It results in the waste of money and time. In this research, we designed and implemented ecosystem management system of stream region using geographical information system(GIS) that is able to be used to manage the natural resource efficiently. It is expected to be used as a useful tool for Improvement of environment and management of ecosystem as well as recovery of natural environment.

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A Comparative study of Assessment Techniques for Soil Ecosystem Health: Focusing on Assessment Factors of Soil Health (토양생태계 건강성 평가기법 비교연구: 토양건강성 평가항목을 중심으로)

  • Chae, Yooeun;Kim, Shin Woong;Kwak, Jin Il;Yoon, Youngdae;Jeong, Seung-Woo;An, Youn-Joo
    • Journal of Soil and Groundwater Environment
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    • v.20 no.3
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    • pp.15-24
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    • 2015
  • The soil ecosystem is a complex system performing particularly complicated and varied functions, such as providing a habitat for organisms, acting as a medium for plant cultivation and growth, and functioning as a buffer against external materials in the environment. To assess whether these important functions of the soil ecosystem are executed appropriately, the concept of soil ecosystem health has been introduced, which is defined as the ability to perform the specific functions of the soil ecosystem. Understanding soil properties and soil indicators related to soil functions is essential to assess the soil health. In this study, systems, the indicators, and evaluation factors for assessing soil ecosystem health employed in a number of countries were investigated and discussed. In particular, it is necessary to introduce a technique for the evaluation of soil ecosystem health in Korea and to develop techniques and indicators appropriate to the soil ecosystem and status in Korea.

Changes in Marine Ecosystem according to Climate Change and Fishery (기후변화에 따른 해양생태계 변화와 어업)

  • Hong, Sun-Kee
    • Korean Journal of Ecology and Environment
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    • v.47 no.4
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    • pp.302-311
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    • 2014
  • Global climate change is significant issue in marine ecosystem and fishery market. According to rising of both seawater temperature and sea-level, global fishery environment and marine ecosystem are changing drastically. Moreover, over-exploitation in fishery areas is the most important issue in the marine ecosystem conservation. In analysis and statistics of global network, major fish populations are decreasing very fastly, but fish catch are increasing annually. It means balance between product and consume is not appropriate in the global market. China as emerging new fish consumer in the world is strongly developing fishery industry and technology. In this paper, I try to review a relationship between marine ecosystem and climate change in global scale according to references. I also suggested possibility of sustainable global fishery in changing marine ecosystem by analysis of some related reports of international global fishery.

A Study on the Contexts of Ecosystem Services in the Policymaking Process (정책형성단계에서 생태계서비스에 관한 이론적 고찰)

  • Koo, Meehyun;Lee, Dong-Kun;Jung, Tae-Yong
    • Journal of the Korean Society of Environmental Restoration Technology
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    • v.15 no.5
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    • pp.85-102
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    • 2012
  • Industrialization and modernization of the $20^{th}$ century have brought convenience to human life. However, such development produced unintentional global environmental issues such as destruction of natural ecosystem through excessive use of the natural environment beyond its capacity. The United National (UN) recognized such global environment issues and coordinated with worldwide experts to conduct a comprehensive assessment of the global ecosystem, "Millennium Ecosystem Assessment (MA)", to resolve the issues. The UN conducted the MA primarily to comprehend the correlation between the ecosystem and human welfare. The results demonstrated that the ecosystem provides various direct and indirect benefits to human. This new concept was introduced as the "ecosystem services". Introduction of the ecosystem services highlighted the significance of the ecosystem and led to increased research and active discussions among experts from various discipline over the recent 10 years. It has been considered that the ecosystem service concept could be incorporated in policymaking process, as primary criteria to assess and weigh the benefits of using natural resources against the effects on value of the ecosystem. The current policymaking process is affected by the contradicting logics of modernization and preservation of ecosystem. The ecosystem services concept could be the answer to forming a rational policymaking process, allowing for nature preservation while wisely using the available natural resources. The general consensus has been formed on the need of incorporating the ecosystem services concept in the policies and globally various researches on the ecosystem services have been actively conducted. However, introduction of the ecosystem services concept is still at a very early stage and research on real application of the ecosystem services is yet almost nonexistent. Also there are no clear and agreed definition, classification scheme and value appraisal methodology regarding the ecosystem services. Therefore, this research explains the basic concept of the ecosystem services and highlights specific issues for further researches, as further researches on real application of the ecosystem services would find ways for the ecosystem services approach to be valuable in the policymaking process.

Foundation of Park Management Plan to Consider Ecological Aspects Based on Environment.Ecology Research and Analysis in Bulamsan Urban Nature Park (불암산도시자연공원의 환경생태 현황 조사.분석을 통한 생태적 측면에서의 공원관리계획 수립)

  • Lee Soo-Dong;Choi Jin-Woo;Lee Kyong-Jae;Han Bong-Ho
    • Korean Journal of Environment and Ecology
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    • v.20 no.2
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    • pp.170-187
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    • 2006
  • The purpose of this study is to provide a basic datd for establishing a basic park management plan for Bulamsan Urban Nature Park. This research surveys very closely about the present condition of the natural ecosystem based on the examination and analysis of the present condition. This research suggests development and management methods for environment-friendly park by understanding damages on the ecosystem due to overuse, as well as park facilities and their effects on the surrounding environment, using quantative analysis. The three steps: researching the present condition research, ecosystem evaluation, and park management plan were taken in order. The present condition research is based on the general condition, natural environment, and natural ecosystem data. In the ecosystem evaluation, wildlife habitats evaluation, landscape evaluation, and biotope type research which is a materialized form of the plant ecosystem were excuted based on the present condition research data. In the park management plan step, 1) classified ecosystem and landscae preservation zone, ecosystem protection zone and ecosystem restoration zone as ecosystem and landscape preservation plan, 2) plannings for ecosystem, fine landscape preservation, damaged area restoration and recovery plan were established in order to suggest environment-friendly plan,

A Preliminary Study on the Establishment of Background Levels and Management Targets in the Coastal Ecosystem of Korean Peninsula Using Outlier Test (이상치 검증을 이용한 한반도 연안생태계의 배경 농도 및 관리 항목 도출에 대한 예비 연구)

  • CHIN, BYUNG SUN;HWANG, IN SEO;KIM, YOUNG NAM;KOH, BYOUNG SEOL;YOO, JEONG KYU;JUNG, HOE IN;YEO, JUNG WON;WOO, SEUNG;PARK, GYUNG SOO
    • The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
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    • v.24 no.1
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    • pp.170-186
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    • 2019
  • The marine ecosystem survey investigates and analyzes multi-parameters at various times from various sites. Therefore, it is very difficult to analyze the complex ecological data of multi-items effectively, and it is more difficult to identify the current status and diagnose the problems of ecosystem through data analysis. Therefore, this paper aims to provide an example of interpretation of complex ecological data through analysis of distribution characteristics and outliers of ecological survey data. The main contents of the study are to elucidate the background levels of coastal ecosystem parameters considering the distribution characteristics of data, and to establish ecosystem monitoring indicators and an adaptive management system for the coastal waters in Korean Peninsula. The data used in this paper are based on the coastal ecosystem survey of the National Marine Ecosystem Monitoring Program conducted by the Ministry of Oceans and Fisheries (MOF) and the Korea Marine Environment Management Corporation (KOEM), and the major citations are from year 2015 to 2017. This article is a preliminary study to establish the above processes and the final result will be derived in 2020 when the coastal ecosystem survey is completed three times along the Korean coast.